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Towing vehicle and semitrailer (example)
Pay attention to the swivel angle
cornering.
The swivel angle is dependent on the coupling
system on the towing vehicle and trailer or semi‐
trailer.
Coupling up
Notes on coupling up
Note on tractor/trailer synchronisation (vehi‐
cles without EBS)
* NOTE Increased brake wear
When a trailer or semitrailer is coupled up for
the first time, a tractor/trailer synchronisa‐
tion process should be performed.
Otherwise, increased brake wear may occur.
Have tractor/trailer synchronisation
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carried out at a qualified specialist
workshop.
Information on the fifth-wheel coupling
& WARNING Risk of accident due to dam‐
aged or unlocked fifth-wheel coupling
If the fifth-wheel coupling is damaged or not
correctly engaged, you could lose the semi-
trailer.
Always check that the fifth-wheel cou‐
#
pling is free of damage and properly
engaged after coupling up.
Ensure this even if the following conditions have
been met:
The vehicle is equipped with a monitored
R
semitrailer coupling.
The green ¤ indicator lamp in the status
R
area of the on-board computer / instrument
cluster lights up.
* NOTE Damage to the fifth wheel kingpin
During coupling up, the red ¤
semitrailer coupling: open if needed.
window will be displayed by the on-board
computer.
Check the locking mechanism on the
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monitored semitrailer coupling.
3
during tight
* NOTE Damage to the sensor on the fifth-
Note the wear limits in the manufacturer's
operating manual:
for the wear ring
R
for the locking hook
R
for the fifth-wheel kingpin
R
Do not fall below the wear limits. Otherwise,
the sensor on the fifth-wheel kingpin could be
damaged.
If a red event window appears several
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times on the on-board computer display
when a semitrailer is coupled up and
the ignition is switched on, check the
wear limits on the semitrailer and the
monitored semitrailer coupling:
The monitored semitrailer coupling has sensors
that, during the coupling/uncoupling process or
once the ignition has been switched on, perform
the following functions:
monitor the semitrailer, the fifth-wheel king‐
R
pin and the clasp
show the status of the locking mechanism of
R
the monitored semitrailer coupling on the on-
board computer display
Driving mode 287
or the monitored semitrailer coupling
wheel kingpin
Check
event
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